Fix directory hardlinks from deleted directories

[pandora-kernel.git] / fs / lockd / svclock.c

diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index f0179c3..cb7b186 100644 (file)
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -741,6 +741,7 @@ nlmsvc_grant_blocked(struct nlm_block *block)
        struct nlm_file         *file = block->b_file;
        struct nlm_lock         *lock = &block->b_call->a_args.lock;
        int                     error;
+       loff_t                  fl_start, fl_end;
 
        dprintk("lockd: grant blocked lock %p\n", block);
 
@@ -758,9 +759,16 @@ nlmsvc_grant_blocked(struct nlm_block *block)
        }
 
        /* Try the lock operation again */
+       /* vfs_lock_file() can mangle fl_start and fl_end, but we need
+        * them unchanged for the GRANT_MSG
+        */
        lock->fl.fl_flags |= FL_SLEEP;
+       fl_start = lock->fl.fl_start;
+       fl_end = lock->fl.fl_end;
        error = vfs_lock_file(file->f_file, F_SETLK, &lock->fl, NULL);
        lock->fl.fl_flags &= ~FL_SLEEP;
+       lock->fl.fl_start = fl_start;
+       lock->fl.fl_end = fl_end;
 
        switch (error) {
        case 0:
@@ -913,6 +921,7 @@ nlmsvc_retry_blocked(void)
        unsigned long   timeout = MAX_SCHEDULE_TIMEOUT;
        struct nlm_block *block;
 
+       spin_lock(&nlm_blocked_lock);
        while (!list_empty(&nlm_blocked) && !kthread_should_stop()) {
                block = list_entry(nlm_blocked.next, struct nlm_block, b_list);
 
@@ -922,6 +931,7 @@ nlmsvc_retry_blocked(void)
                        timeout = block->b_when - jiffies;
                        break;
                }
+               spin_unlock(&nlm_blocked_lock);
 
                dprintk("nlmsvc_retry_blocked(%p, when=%ld)\n",
                        block, block->b_when);
@@ -931,7 +941,9 @@ nlmsvc_retry_blocked(void)
                        retry_deferred_block(block);
                } else
                        nlmsvc_grant_blocked(block);
+               spin_lock(&nlm_blocked_lock);
        }
+       spin_unlock(&nlm_blocked_lock);
 
        return timeout;
 }